题目内容
【题目】Ben was busy taking a training class, ________ we had to wait for him for half an hour.
A.so
B.if
C.or
D.but
【答案】A
【解析】句意：Ben在忙着上训练课，所以我们不得不等他半个小时。表示因果关系，故选A。
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题目内容
【题目】Ben was busy taking a training class, ________ we had to wait for him for half an hour.
A.so
B.if
C.or
D.but
【答案】A
【解析】句意：Ben在忙着上训练课，所以我们不得不等他半个小时。表示因果关系，故选A。